Pile-extractor.



E. A. KEELER. PILE EXTRACTOR.

APPLICATION FILED MAR. 15 I916.

Patented 0G1}. 10,1916.

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Atto rn eys EDWARD A. KEELEB, 0F ALBANY, NEW YORK.

I PILE-EXTRACTOR.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed March 15, 1916. Serial No. 84,440.

[0 all whom it may concern:

Be it known that I, EDWARD A. KEELER, a citizen of the United States,residing at Albany, in the county of Albany and State of New York, haveinvented a new and useful Pile-Extractor, of which the following is aspecification.

for extracting piles. An ordinary pile driving hammer is used, the samebeing inverted, and operating to impart an upward driving force to thepile, whereby it is literally driven opt of the ground. By this method,the pile is extracted in a more satisfactory manner, less power beingnecessary, due to the vibration of the hammer, and the successive blowsthereof.

Another object of the invention is the provision of novel means forsuspending the hammer, and for connecting it with the pile.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a side elevation of the appliance as in use. Fig. 2 is aside elevation, the line of view being at right angles to the line ofview in Fig. 1, and portions being broken away.

In the drawing, there are illustrated the upper ends of steel piles 1,although it is to be understood that the present apparatus can be usedfor extracting various piles, posts and the like with equal success. Thepiles 1 are provided, as usual, with apertures 2 adjacent their upperends for convenience in extracting them.

In carrying out this invention, there is provided a double bar 3providing a loopshaped frame, the terminals of the bar being lowermostand converging toward one another. The lower end of the frame 3 isreadily assembled with the pile which is to be extracted, by slippingthe terminals of the frame astride the upper end of the pile, andinserting a bolt 4 or equivalent securing element through the aperturedterminals of the frame 3 and the aperture 2 of the pile, whereby toanchor the frame to the pile. This frame is readily applied to andremoved from the successive piles. Disposed within the frame 3 is anordinary pile driving hammer 5 utilizing steam, compressed air, or othermotive fluid. The detail construction of the hammer need not bediscussed, since it forms no part of the present invention.

As a means for suspending the hammer 5, there are provided cable bridles6 of steel or other material of sufiicient strength, in which bridlesthe hammer 5 is slung, the lower end of the hammer seating upon thelower portions of said bridles. The upper ends of the bridles areengaged through a ring 7 or equivalent supporting element. A pair ofbolts or rods 8 are engaged throughthe upper end of the hammer 5, tohold the bridles 6 separated, and said bridles are clamped against thehammer by transverse bars o straps 9 engaged upon the bolts 8. The bars9 hold the bridles assembled with the bolts 8, and said bars also extendacross the upper end of the frame, thereby assisting in holding theframe and hammer properly assembled. The driving plate 10 of the hammerrests against the upper portion or bend of the frame 3, and the plungeror driving rod 11 of the hammer 5 is arranged to impinge against theplate 10 by an upward movement, the hammer being in inverted position.The bridles 6 can be suspended by any suitable mechanism, such as aderrick, frame, or the like. As illustrated, the ring 7 is engaged withthe hook 12 of a pulley block 13 which is suspended from the cable 14 ofa derrick, although the bridles can be suspended in any other suitablemanner. When the hammer 5 is operated, the blows thereof are exertedupwardly against the plate 10, and the force of said blows will betransmitted through the frame 3 to the pile 1, whereby sharp upwardimpulses are tion. As the pile is raised, the hammer is raisedaccordingly by raising the bridles 6.

Having thus described the invention,

what is claimed as new is:

An extracting device comprising a frame embodying a doubled bar havingits terminals lowermost and adapted for attachment with an object to beextracted, a pressure fluid hammer Within said frame having a drivingplate resting against the upper end of said frame, cable bridles inwhich said therewith and extending across the upper end of said frame.

In testimony that I claim the foregoing asmy own, I have hereto aflixedmy signature in the presence of two witnesses.

EDWARD A. KEELER.

\Vitnesses:

E. M. SHAFFER, M. EBEL.

Copies 0! this patent may be obtained, for five cents each, byaddressing the Commissioner of Patents,

- Washington, D. G.

